在“易居住房10”的基础上进行增加或修改代码
过滤器拦截 “yiju”中添加“filter”包，在“filter”包中添加“LoginFilter.java” “LoginFilter.java”代码如下
package com.yiju.filter; import com.yiju.bean.UserInfo; import javax.servlet.*; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.IOException; public class LoginFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletRequest request= (HttpServletRequest) servletRequest; HttpServletResponse response= (HttpServletResponse) servletResponse; HttpSession session=request.getSession(); String path=request.getContextPath(); String url=request.getRequestURI(); UserInfo userInfo= (UserInfo) session.getAttribute("user"); if (userInfo==null && url.indexOf("login2.do")==-1 && url.indexOf("findFourHouse.do")==-1 && url.indexOf("main.jap")==-1 && url.indexOf("login.jsp")==-1 && url.indexOf("index.jsp")==-1 && (!"/".equals(url)) ){ response.sendRedirect(path+"/pages/login.jsp"); } else { filterChain.doFilter(request,response); } } @Override public void destroy() { } }“web.xml”增加代码
<!-- 拦截 --> <filter> <filter-name>loginFilter</filter-name> <filter-class>com.yiju.filter.LoginFilter</filter-class> </filter> <filter-mapping> <filter-name>loginFilter</filter-name> <url-pattern>*.do</url-pattern> <url-pattern>*.jsp</url-pattern> </filter-mapping>“UserController.java”增加代码
@RequestMapping("logout.do") public String logout(HttpSession session){ session.removeAttribute("user"); return "redirect:../index.jsp"; }修改“basehead.jsp”如下
<!--头部最上方的框--> <div class="header"> <div class="width1190"> <div class="fl" style="font-size: 14px">您好，欢迎来到<a href="../index.jsp">易居住房信息平台！</a></div> <div class="fr"> <% UserInfo userInfo= (UserInfo) request.getSession().getAttribute("user");%> <% if (userInfo==null){%> <a href="${pageContext.request.contextPath}/pages/login.jsp" style="font-size: 14px" target="_blank"><strong>登录</strong></a> | <a href="${pageContext.request.contextPath}/pages/signup.jsp" style="font-size: 14px" target="_blank"><strong>注册</strong></a> <%} else {%> <a href="${pageContext.request.contextPath}/pages/personal.jsp" style="font-size: 14px" target="_blank"><strong>你好！${user.phone}</strong></a> <%}%> <a style="font-size: 14px">欢迎使用</a> | <a href="${pageContext.request.contextPath}/pages/personal.jsp" style="font-size: 14px" target="_blank"><strong>个人中心</strong></a> | <a href="${pageContext.request.contextPath}/user/" style="font-size: 14px"><strong>退出</strong></a> | <a href="javascript:;" onclick="" style="font-size: 14px">加入收藏</a> | <a href="javascript:;" onclick="" style="font-size: 14px">设为首页</a> </div> <div class="clears"></div> </div><!--width1190/--> </div> <!--头部最上方的框-->页面效果 未登录只显示首页内容，任意点击都会跳转到登录页面，登录成功后“登录|注册”变为“你好！手机号”，例如下图 图片轮播
在“main.jsp”的<head></head>里的包后增加代码
<script type="text/javascript"> var picsArr=new Array(); picsArr[0]="images/lunbotu/fang1.jpg" picsArr[1]="images/lunbotu/fang2.jpg" picsArr[2]="images/lunbotu/fang3.jpg" var index=0; var timer=0; window.onload=showPic; function showNext() { clearTimeout(timer); showPic(); } function showPic() { if(index<(picsArr.length-1)){ index++; }else { index=0; } document.getElementById("pic").src=picsArr[index]; timer=setTimeout("showPic()",2000); } function showPre() { showPrePic() } function showPrePic() { if(index>0){ index--; }else { index=picsArr.length-1; } document.getElementById("pic").src=picsArr[index]; } </script>页面效果 首页图片每隔2秒自动轮播，点击左右键可分别跳到上一张，下一张
